1993-1994年，17个州和一个地区报告了30起与饮用水有关的疾病暴发，估计影响405366人。在已确定病原体的25起疫情中，有10起由蓝氏贾第鞭毛虫或微小隐孢子虫引起，8起由化学中毒引起，3起由空肠弯曲菌引起，2起由志贺氏菌引起，1起由非01型霍乱弧菌和血清型鼠伤寒沙门氏菌引起。30起疫情中有20起（66.7%）与井水有关。此外，九个州报告了14起与娱乐用水有关的胃肠炎暴发，估计有1437人受到影响。 其中10起暴发由贾第虫或隐孢子虫引起，3起由志贺氏菌引起，1起由大肠杆菌0157:H7引起。包括47个参考文献、表格、图表。

For 1993-94, 17 states and one territory reported 30 disease outbreaks associated with drinking water, affecting an estimated 405,366 people. Ten of the 25 outbreaks for which the etiologic agent was identified were caused by Giardia lamblia or Cryptosporidium parvum, eight were caused by chemical poisoning, three by Campylobacter jejuni, two by Shigella spp., and one each by non-01 Vibrio cholerae and Salmonella serotype Typhimurium. Twenty (66.7 percent) of the 30 outbreaks were associated with well water. In addition, nine states reported 14 outbreaks of gastroenteritis associated with recreational water, which affected an estimated 1,437 people. Ten of these outbreaks were caused by Giardia or Cryptosporidium, three by Shigella spp., and one by Escherichia coli 0157:H7. Includes 47 references, tables, figures.